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Islamic Azad University
Abstract:   (21 Views)

Performance of any breeding program is mainly due to the correlation between yield and relative importance of each component depends participating in increasing grain yield. This study was conducted to analysis the correlation among grain yield and some important traits in seventhin spring canola (Brassica napus L.) cultivars at the farm in safiabad, from 2014 to 2015. A randomized complete block design with four replications was used. The analysis of variance results indicated highly significant differences in canola genotypes for all studied traits, who it can indicated genetically variation be utilizable for the effective selection for improve grain yield. Mean comparision showed that RGS003 and Hayola401 cultivars had higher grain yield than others cultivars. The correlation coefficients among the grain yield and 1000-seed weight, number of seed per pod, HI and days to maturity were positive and significant. The results of stepwise regression analysis revealed that 1000-grain weight, number of pods per plant and days to maturity significantly had more important effects respectively on grain yield. Path coefficient analysis revealed that the number of seed per pod and 1000-seed weight had the largest direct effects on the grain yield, its seams possible to use these traits as a selection criteria in breeding programs for improve grain yield of spring rapeseed cultivars.

     

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